Ошибка [INSTALL_FAILED_ALREADY_EXISTS] при попытке обновить приложение

Используйте ggplot2:

library(ggplot2)

# Add step height information with sequence and rle
df$step <- sequence(rle(df$individual)$lengths)

# plot
df$individual <- factor(df$individual)
ggplot(df, aes(x=events, group=individual, colour=individual, y=step)) + 
  geom_step()

[/g0]